The pieces of the story start making sense when Nicholas tells Jo and Louisa how he came to be in Sir Ivor's care. When Frid returns back to the house they hide Nicholas, Nicholas however still wants to know where the encyclopedia came from. Jo convinces him then of her story when she shows him the mirror. Back in 1995 Jo wants to get the cure for Nicholas, only Nicholas needs to actually be there. Meanwhile, Primrose has discovered Nicholas in Louisa's room and after a doctor looks at his arm he gets escorted back to Sir Ivor's. In order to keep up contact with Nicholas, Jo sends a walkie-talkie over to him in some books. (thetvdb.com)